廬
ISL45042
Data Sheet
August 29, 2007
FN6072.7
LCD Module Calibrator
The V
COM
voltage of an LCD panel needs to be adjusted to
remove flicker. The ISL45042 can be used to digitally adjust
a panel鈥檚 V
COM
voltage by controlling its output sink current.
The output of the ISL45042 is connected to an external
voltage divider and an external V
COM
buffer amplifier. In this
application, the user can control the V
COM
voltage with 7-Bit
accuracy (128 steps). Once the desired V
COM
setting is
obtained, the settings can be stored in the non-volatile
EEPROM memory, which would then be automatically
recalled during every power-up.
The V
COM
adjustment and non-volatile memory
programming is through a single interface pin (CTL). Once
the desired programmed value is obtained, the Counter
Enable pin (CE) can be used to prevent further adjustment
or programming.
The full-scale sink current of the ISL45042 is set using an
external resister connected to the SET pin. The full-scale
sink current determines the lowest voltage of the external
voltage divider.
The ISL45042 is available in an 8 Ld 3mmx3mm TDFN
package with a maximum thickness of 0.8mm for ultra thin
LCD panel design.
Features
鈥?128-Step Adjustable Sink Current Output
鈥?2.6V to 3.6V Logic Supply Voltage Operating Range
鈥?4.5V to 20V Analog Supply Voltage Range
鈥?Rewritable EEPROM for Storing the Optimum VCOM
Value
鈥?Output Adjustment Enable/Disable Control
鈥?Output Guaranteed Monotonic Over-Temperature
鈥?Two Pin Adjustment, Programming and Enable
鈥?Ultra Thin 8 Ld 3mmx3mm DFN (0.8mm max)
鈥?Pb-free Available (RoHS compliant)
Applications
鈥?LCD Panels
Ordering Information
TEMP.
RANGE
PART
(擄C)
PART NUMBER MARKING
ISL45042IR
ISL45042IR-T*
042I
042I
PKG.
DWG. #
L8.3x3A
L8.3x3A
PACKAGE
-40 to +85 8 Ld 3x3 TDFN
-40 to +85 8 Ld 3x3 TDFN
Tape and Reel
-40 to +85 8 Ld 3x3 TDFN
(Pb-free)
-40 to +85 8 Ld 3x3 TDFN
Tape and Reel
(Pb-free)
-40 to +85 8 Ld 3x3 TDFN
Tape and Reel
(Pb-free)
Pinout
ISL45042
(8 LD TDFN)
TOP VIEW
OUT 1
AVDD 2
N/C 3
GND 4
8
7
6
5
SET
CE
CTL
VDD
ISL45042IRZ
(Note)
ISL45042IRZ-T*
(Note)
042Z
L8.3x3A
042Z
L8.3x3A
ISL45042IRZ-TK* 042Z
(Note)
L8.3x3A
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach materials
and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which
is RoHS compliant and compatible with both SnPb and Pb-free
soldering operations. Intersil Pb-free products are MSL classified at Pb-
free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2003, 2005, 2006, 2007. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
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